Ref SER-271, ported from rel_2_0_0 Used cvs2cl.pl (http://www.red-bean.com/cvs2cl/) to generate GNU-style changelog from cvs log. Replaced very old ChangeLog with the newly generated one. The ChangeLog only goes back to the rel_0_9_0 release branch and thus contains changes for release 2.0 release candidate 1.